To try and help you, please, can you work your way through the audio troubleshooting guide, and see if it can help you solve your problem. SDB:AudioTroubleshooting - openSUSE
Please pay attention to the need to install alsa-firmware and also check your mixer settings thoroughly.
If that does not work for you, then please can you post the output of:
a. the URL(s) provided by running the two diagnostic scripts recommended by the audio troubleshooting guide. Scripts_to_run_to_obtain_detailed_information
b. the output of running in a terminal/xterm/konsole:
rpm -qa | grep alsa
rpm -qa | grep pulse
rpm -q libasound2
uname -a
cat /etc/modprobe.d/sound